
304111-B Rev 00
1-1
Chapter 1
Overview of IPsec
This chapter describes the emerging Internet Engineering Task Force standards for
security services over public networks, commonly referred to as IP Security or
IPsec. The chapter also includes information specific to the Bay Networks
implementation of IPsec and requirements for that implementation.
This chapter includes the following information:
Topic Page
About IPsec 1-2
IPsec Services 1-2
How IPsec Works 1-3
Elements of IPsec 1-5
Security Gateways 1-7
Security Policies 1-8
Security Associations 1-11
Summarizing Security Policies and SAs 1-14
Security Protocols 1-15
Internet Key Exchange (IKE) Protocol 1-17
Network Requirements for Bay Networks Routers 1-18
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